CN117178093A - Mast element, in particular a tower element, for a construction machine and method for producing a mast element - Google Patents
Mast element, in particular a tower element, for a construction machine and method for producing a mast element Download PDFInfo
- Publication number
- CN117178093A CN117178093A CN202280029240.7A CN202280029240A CN117178093A CN 117178093 A CN117178093 A CN 117178093A CN 202280029240 A CN202280029240 A CN 202280029240A CN 117178093 A CN117178093 A CN 117178093A
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- China
- Prior art keywords
- mast
- steps
- method comprises
- profile
- section
- Prior art date
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- 238000010276 construction Methods 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 9
- 239000013585 weight reducing agent Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
- E02D7/16—Scaffolds or supports for drivers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/023—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting the mast being foldable or telescopically retractable
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
- E02D7/16—Scaffolds or supports for drivers
- E02D7/165—Scaffolds or supports for drivers of variable length, e.g. foldable or telescopic
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to a mast element, in particular a tower element, for a construction machine, comprising an elongate hollow mast profile which is approximately rectangular in cross section and which has a linear guide (20) for a mast carriage on its outer side in the longitudinal direction of the mast. Furthermore, according to the invention, at least one diagonal stiffening element extends in the mast profile in the mast longitudinal direction, which stiffening element is arranged at an oblique angle to the side of the approximately rectangular mast profile.
Description
Technical Field
The invention relates to a mast element, in particular a tower element, for a construction machine according to the preamble of claim 1The mast element has an elongate hollow mast section which is approximately rectangular in cross section and has a linear guide for the mast carriage on its outer side in the mast longitudinal direction.
The invention also relates to a method for manufacturing a mast element according to claim 12.
Background
Such mast elements are known in particular as masts in earth boring equipment, for example for setting up foundation piles. Such mast elements (which are oriented substantially vertically in operation) typically have a length of several meters up to about 30 meters. Along the front side of the mast element (which is often also referred to as a pylon) linear guides for mast carriages or working carriages are provided. For example, a drilling drive for the earth-boring apparatus may be arranged at the working carriage.
The mast element must have a high stiffness with as little weight as possible in order to ensure a reliable guidance on the one hand and to keep the center of gravity of the entire device low for good roll stability on the other hand. It is known to use approximately rectangular hollow profiles for such mast elements. Such tubular hollow profiles can be manufactured from steel material as seamless hollow profiles or U-profiles. For reinforcing such mast sections, it is known to divide the mast section into sections of several meters in length and to weld transversely oriented reinforcement plates (which are also referred to as mast bulkheads) between the sections. The U-profile can be closed by welding the cover plate.
In order to apply both the external weld and the internal weld, it is necessary in such a bulkhead plate to introduce access holes (so-called hand holes) into the mast profile in the region of the bulkhead so that the welder can thereby perform the welding between the mast hollow profile and the bulkhead plate at the inner side of the mast hollow profile. This is complex and very time-consuming and labor-consuming. Welding of the partition wall plates can also be omitted, but this can have an adverse effect on the rigidity of the mast.
Further stiffening of such mast elements can be achieved by additionally welding an elongate guide strip on the outside. These guide strips serve to form a mast longitudinal guide for the mast carriage and at the same time form additional stiffening elements at the outer side.
From EP 2520756 B1, a mast element with an elongated tubular body is known, which is formed from a fiber composite material. The processing of fiber composites is time consuming and costly. The connection to steel materials is difficult and requires special connection means.
Disclosure of Invention
The invention is based on the following tasks: a mast element and a method for producing the same are described, with which a particularly high rigidity can be achieved with high productivity and low costs.
According to the invention, this object is achieved by a mast element having the features of claim 1 and a method having the features of claim 12. Preferred embodiments of the invention are described in the dependent claims.
The mast element according to the invention is characterized in that at least one diagonal stiffening element extends in the mast profile in the longitudinal direction of the mast, which stiffening element is arranged at an oblique angle to the side of the approximately rectangular mast profile.
The basic idea of the invention can be seen here: a reinforcing element is arranged in the hollow mast section, which reinforcing element extends diagonally to the side of the mast section, i.e. at an oblique angle to the inner side of the approximately rectangular section, for reinforcement. The bevel angle is different from the right angle. The reinforcement element extends in the longitudinal direction of the mast at least over one or more subregions, preferably over the entire length of the mast element. By such internal diagonal reinforcement, a significant increase in the stiffness and torsional stiffness of the mast profile in terms of bending transversely to the longitudinal direction can be achieved with a relatively low additional weight. The corner regions of the mast profile can be rounded or provided with a chamfer. The rectangular profile can also be approximately square with the same side length.
In principle, the stiffening element can be connected to the outer mast profile in any suitable way, for example by screwing. A preferred embodiment of the invention consists in that at least one stiffening element is welded along the inner side of the mast profile. Welding is a reliable and cost-effective connection between metallic materials. The weld runs here in the longitudinal direction of the mast.
According to a further development of the invention, it is particularly advantageous if at least one stiffening element is welded along at least two side edges to the preferably opposite wall of the mast profile. The diagonal stiffening elements (which may also be referred to as stiffening elements) may preferably extend diagonally from one corner region through the mast hollow profile to the opposite corner region. In principle, two or more reinforcing elements can also be provided in the mast profile. It is also possible to arrange a plurality of stiffening elements, for example in a V-shaped, X-shaped or Y-shaped arrangement.
According to a further embodiment variant of the invention, particularly efficient reinforcement can be obtained in that at least one reinforcing element has a sheet metal part or a folded sheet metal part. Such a reinforcing element can be produced cost-effectively. An additional increase in torsional stiffness is obtained by the folded sheet metal (which may have an L-shape, C-shape or Z-shape in cross section) relative to a flat sheet metal plate.
According to one development of the invention, a particularly high rigidity is achieved in particular by the plurality of reinforcement elements being fixedly mounted, in particular welded, along the mast side. The plurality of reinforcing elements can be arranged and welded both offset in the axial longitudinal direction and directly next to one another in the mast profile. The reinforcement elements can also be welded to one another at their butt joints.
In principle, the stiffening element may be a continuous plate element. A particularly preferred embodiment of the invention consists in that at least one reinforcing element has a recess for weight reduction. These recesses may be, for example, disk-shaped slits in the central region of the plate-like reinforcing element. In this way, a significant weight reduction of the reinforcing element can be achieved with a continuously good stiffness.
According to a further development of the invention, for good manufacturability of the mast element, the mast profile is advantageously formed by connecting at least two elongate mast parts, wherein the connection joints of the mast parts extend in the longitudinal direction of the mast. In this way, for example, the reinforcement element can be welded first to the first mast part in the longitudinal mast direction, which is L-shaped or C-shaped in cross section. The second mast longitudinal part can then be welded to the first mast part in the mast longitudinal direction for closing the mast hollow section, so that the reinforced mast hollow section can be formed overall efficiently. A continuous weld or spot weld connection may be provided. Alternatively or additionally, a screw connection and/or a groove-key connection may be provided.
It is particularly advantageous if the at least one reinforcing element is welded to the at least one elongate mast part before the mast hollow profile is closed on the circumferential side by welding the last elongate mast part. This allows for particularly simple manufacturability, wherein the weld seam can also be produced by a welding robot.
In principle, the mast element according to the invention can be inserted or installed at various devices and facilities, alone or in combination with further mast elements. In particular, the invention comprises a working machine, in particular an underground working machine, having a carrier device and a mast mounted thereon, wherein the mast has at least one mast element according to the invention.
In particular, in construction machines with mobile carrier devices, a particularly rigid mast is required, wherein at the same time the entire center of gravity of the construction machine is not allowed to migrate too far upwards from the mast in order to ensure sufficient stability and tilting resistance of the construction machine. This can be achieved particularly well with the mast element according to the invention.
According to one development, it is particularly advantageous if the mast is configured as a tower, in particular as a telescopic tower. The tower is here essentially a vertical mast with at least one linear guide, in particular for the working carriage. In the telescopic tower, the second tower part is guided linearly movably along the linear guide of the first mast element. A linear guide for the working carriage can likewise be arranged at the second mast element. By means of the telescopic tower thus formed, the two mast elements can be moved telescopically relative to each other, so that a relatively high total mast can be achieved in operation.
The invention furthermore comprises a method for producing the mast element according to the invention, wherein at least one diagonal reinforcement element is installed in the mast profile in the longitudinal direction of the mast during or after the formation of the hollow mast profile.
It is particularly preferred that the mast profile is assembled, in particular welded, from two or more elongate mast parts, which extend over the length of the mast element, respectively. The mast element can be an elongated sheet metal plate or sheet metal profile. At least one reinforcing element is inserted and preferably welded in the longitudinal direction at the inner side of the still open mast profile, at least before the last mast part is welded to enclose the mast hollow profile. This can be implemented simply and efficiently. The mast profile can then be mounted, in particular welded, on the opposite side for forming a closed hollow mast profile.
Drawings
The invention is further described below in accordance with a preferred embodiment shown in the drawings. Wherein:
fig. 1 shows a schematic cross-sectional view through a mast element according to the invention; and
fig. 2 shows a perspective view of a work machine according to the invention.
Detailed Description
Fig. 1 shows a schematic cross-sectional view through a mast element 10 according to the invention, which is formed essentially by a hollow outer mast section 12. The mast section 12 can be assembled and welded from different mast parts or walls which extend in the longitudinal direction of the mast. The mast longitudinal direction extends perpendicularly to the drawing plane.
The mast section 12 has a front wall 14, two side walls 16 and a rear wall 18 as mast parts which are welded to one another to form the mast section 12 which is rectangular in cross section. In the corner region between the side wall 16 and the front wall 14, two laterally projecting, higher guide profiles 22 are inserted and welded, which form a linear guide 20 for a mast carriage or working carriage, not shown, along the front wall 14.
For reinforcing the mast element 10, the first reinforcement element 30 and the second reinforcement element 40 are arranged in the interior of the hollow mast section 12 and welded to the inner side of the outer mast section 12. The diagonal first reinforcing element 30 is here an isosceles metal sheet which is folded over in approximately right angles and which is welded at its free end to the corresponding opposing guide profile 22. The leg of the first reinforcement element 30 of the fold is arranged here at an angle of approximately 45 ° to the side wall 16, the edge region being approximately in the middle of the mast profile 12.
The diagonal second reinforcement element 40 is fastened on the one hand in the corner region of the left-hand side wall 16 at this side wall and on the other hand is welded approximately in the middle of the mast section 12 in the edge region to the first reinforcement element 30. A particularly high rigidity of the hollow mast profile 12 and thus of the mast element 10 is achieved by such multiple diagonal reinforcements extending in the longitudinal direction of the mast. The stiffening elements 30,40 forming the respective chambers in the mast section 12 can also be referred to as mast longitudinal bulkheads. For higher reinforcement, an X-shaped arrangement may also be provided.
In addition, for reinforcement, additional longitudinal profiles can be welded at the inner side of the respective mast part parallel or at right angles to the inner side, such that, for example, a first longitudinal profile 24 is welded at the inner side of the front wall 14 and a second longitudinal profile 26 is welded at the inner side of the rear wall 18, which in particular increases the bending stiffness of the front wall 14 and the rear wall 18.
According to fig. 2 a work machine 70 according to the invention is shown with a carrier device 71. The carrier device 71 comprises an upper structure 72 rotatably supported on a lower structure 73, which lower structure 73 has a crawler running gear.
Supported at the superstructure 72 is a substantially vertically oriented mast 74 comprising a mast element 10 according to the invention. Along the mast 74 with the mast element 10, a linear guide 20 for a mast carriage 75 is constructed. A rotary drive 76 can be supported at the mast carriage 75. Via a load-bearing rope 80, which leads through the mast head of the mast 74, a kelly bar assembly 100 can be suspended, which projects downwardly through the endless rotary drive 76. At the lower end of the kelly bar assembly 100, a drilling tool (e.g., box drill) not shown may be installed at the tool interface 98. Via at least one supply line 82, hydraulic fluid may be supplied, for example, from the carrier device 71 via the suspension device 96 to the kelly bar assembly 100 and thus the associated drilling tool.
For the purpose of illustrating the invention, access holes 77 are delineated along the mast 74, which are necessarily required in the prior art for welding transversely directed bulkhead plates, but may be omitted in the mast element 10 according to the invention.
Claims (12)
1. A mast element, in particular a tower element, for a construction machine has an elongate hollow mast section (12) which is approximately rectangular in cross section and has a linear guide (20) for a mast carriage on its outer side in the longitudinal direction of the mast,
it is characterized in that the method comprises the steps of,
at least one diagonal stiffening element (30, 40) extends in the mast section (12) in the mast longitudinal direction, said stiffening element being arranged at an oblique angle to the side of the approximately rectangular mast section (12).
2. A mast element according to claim 1,
it is characterized in that the method comprises the steps of,
the at least one stiffening element (30, 40) is fixedly mounted, in particular welded, along the inner side of the mast profile (12).
3. A mast element according to claim 2,
it is characterized in that the method comprises the steps of,
the at least one stiffening element (30, 40) is fixedly mounted along at least two lateral edges, in particular welded, to the preferably opposite walls (14, 16, 18) of the mast profile (12).
4. A mast element according to any one of claim 1 to 3,
it is characterized in that the method comprises the steps of,
the at least one reinforcing element (30, 40) has a sheet metal part or a folded sheet metal part.
5. A mast element according to any one of claims 1 to 4,
it is characterized in that the method comprises the steps of,
a plurality of reinforcing elements (30, 40) are fixedly mounted, in particular welded, along the inner side of the mast profile (12).
6. A mast element according to any one of claims 1 to 5,
it is characterized in that the method comprises the steps of,
the at least one stiffening element (30, 40) has a recess for weight reduction.
7. A mast element according to any one of claims 1 to 6,
it is characterized in that the method comprises the steps of,
the mast profile (12) is formed by connecting at least two elongate mast parts, wherein the connection joints of the mast parts extend in the longitudinal direction of the mast.
8. A mast element according to claim 7,
it is characterized in that the method comprises the steps of,
the mast sections are formed from flat and/or hemmed sheet metal and/or profiles.
9. A mast element according to claim 7 or 8,
it is characterized in that the method comprises the steps of,
the at least one reinforcement part (30, 40) is welded to the at least one elongate mast part before the hollow mast section (12) is closed on the peripheral side by welding the last elongate mast part.
10. A working machine, in particular an underground working machine, has a carrier device and a mast mounted thereon,
it is characterized in that the method comprises the steps of,
the mast has at least one mast element (10) according to any one of claims 1 to 9.
11. A construction machine according to claim 10,
it is characterized in that the method comprises the steps of,
the mast is configured as a tower, in particular as a telescopic tower.
12. A method for producing a hollow mast element (10),
it is characterized in that the method comprises the steps of,
at least one diagonal stiffening element (30, 40) is mounted in the mast profile (12) in the mast longitudinal direction at an oblique angle to the side of the approximately rectangular mast profile (12) during or after the formation of the hollow mast profile (12), wherein a mast element (10) according to any one of claims 1 to 9 is formed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21174764.7 | 2021-05-19 | ||
| EP21174764.7A EP4092195B1 (en) | 2021-05-19 | 2021-05-19 | Mast element, in particular leader element, for construction machine and method for manufacturing the mast element |
| PCT/EP2022/061333 WO2022243001A1 (en) | 2021-05-19 | 2022-04-28 | Mast element, in particular tower element, for a construction machine and method for producing the mast element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117178093A true CN117178093A (en) | 2023-12-05 |
Family
ID=76325337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280029240.7A Pending CN117178093A (en) | 2021-05-19 | 2022-04-28 | Mast element, in particular a tower element, for a construction machine and method for producing a mast element |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240209689A1 (en) |
| EP (1) | EP4092195B1 (en) |
| CN (1) | CN117178093A (en) |
| WO (1) | WO2022243001A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0548900B1 (en) * | 1991-12-24 | 1997-05-28 | SOILMEC S.p.A. | nydraulic drilling machine of telescopic tower type |
| US20040188118A1 (en) * | 2003-03-26 | 2004-09-30 | Mcphee Robert | Vibratory post driving device |
| EP2520756B1 (en) | 2011-05-05 | 2013-07-17 | Klemm Bohrtechnik GmbH | Mast element for a drill |
| CN111691419B (en) * | 2020-06-23 | 2024-08-16 | 上海工程机械厂有限公司 | Pile driver tower |
-
2021
- 2021-05-19 EP EP21174764.7A patent/EP4092195B1/en active Active
-
2022
- 2022-04-28 WO PCT/EP2022/061333 patent/WO2022243001A1/en active Application Filing
- 2022-04-28 US US18/556,051 patent/US20240209689A1/en active Pending
- 2022-04-28 CN CN202280029240.7A patent/CN117178093A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4092195C0 (en) | 2023-07-05 |
| EP4092195B1 (en) | 2023-07-05 |
| EP4092195A1 (en) | 2022-11-23 |
| US20240209689A1 (en) | 2024-06-27 |
| WO2022243001A1 (en) | 2022-11-24 |
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